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n. HUGHVsoKN'.` f 'ELECTRIC RAILROAD SIGNAL.

, s Sheng-sheets. JLDQHUGHSON. ELECTRIC RAILROAD SIGNAL.

Patented .1311.. 23, 1877.

`wlmesssis ATTUBIEYS.

N.PETF.RS PHOTO-LITHOGRAFNER. WASHINGTON, D C.

lowing is a specification stopped, and be ready for the next train.

` I propose to make in the form of a man, hav- `ing a ag,B, in one hand, and a bell-hammer,

l y E, of any required height, and a bell, F, will l b'e'arranged in suitable position to be struck ""by the hammer when the machine is set motion.

` case, by the cords and weights G and the drums H gear with and disconnect from the segments cranks P and connecting wires or cords Q.

` 1 engage from the segments, and holding them swing back to the starting-point to regulate NITnn STATES PATENT Crrrcn.

:ii-Aeon D. HUGHsoN, or :PRAIRIE CITY, TLLiNors, Assrenon To HiMsnLr AND G. W. HAMILTON, *on SAME PLAGE.

Specicationforming part-of iLettermBaitentNo. #1864572,dated January `23, 1877 application tiled July 11, 1876.

To all whom it may concern: y

.Be it known that Lidlacod. HUGHSON, of Prairie City, in the county of McDonough and State of Illinois, have invented a new and Improved Railroad-Signal, of which the fol- My invention comprises a flag, bell, and

power for working them, and having stop contrivances and an electric tripping device, all so that the passing train will trip the stop mechanism and allow the power to work the Figure l is an elevation of my improved signal. Fig. 2 is a sectional elevation of the same. Fig. 3 is a front elevation of the power mechanism. Fig. 4 is a transverse section, and Figs. 5 and 6 are details.

Similar letters of reference indicate corresponding parts.

A represents the case of the'machine,which C,`in the other, and having a hat, D, contrived for the lantern-case. .Y

The machine will stand on a frame or post,

The motive power is represented, in this but spring or other power. may be used.

There are two trains of gears, I, J K, and L,`each having its own power, and turning the mutilated pinions M, which alternately- N, for working the arms O, which workV the flag and the bell-hammer through the bell- With each pinion M there is a kind of leverescapement for stopping them after theydisready for engaging the segments when they the motion, thel said escapement consisting of the cam or notched wheels `R and the pawllevers S. The pawls catch the notches of the A cam-wheels :R `at the moment `the mutilated portions of the pinions M release the fsegment-wheels, and hold the pinions until the studs T release them by striking them at the moment the segments return to the startingpoint, to which they gravit-ate as soon as released by the pinions. The pinions then start forward again, and again engage the segments, and cause them to raise the flag and the hammer.

There is a stop-motion to arrest the driving@ powers after the machine has run a sufficient length of time, consisting of the disk U, leverpawlsV W X, and arms Y, the arms being on the shafts of thepinions L, to be stopped by the pawls W and X, which arev let act by the dropping of the pawl V into the notch in the face of the disk U, and thus stop the powers.

The disk is employedfor holding the stoppawls out of action the length of time the machine is required to run, which is while the disk makes one revolution, being turned the length of one tooth of wheel d to each revolution of pinion L by asingle tooth, b, on the shaft of said pinion. A pawl, d, prevents the wheel n'l from turning back.

The pawls V W X are caused, by the passing train, to be raised, to let the machine work and signal the train, in the following manner: The car-wheels actuate a short lever, e, alongside of one of the rails, some distance in advance of the signal,'which, by means of the segmental wheels g h and'cordfi, shifts the switch j of an electrical circuit from the mainline connection l to the connection m, with a line by which the current passes momentarily through the helix, and attracts the armature p of lever q, connected to the axis of the said pawls V-W X, and thus raising them, so that the machine is set in motion by the weights.

The spring r returns the lever e to its normal position when the train has passed, and the switch shifts back and connects with the main line, again breakingthe connection with the helix n, and allowing the pawls to fall; but the pawls are prevented by the disk U from falling far enough to stop the machine until the disk has made a revolution, and its notch for the pawl V has returned to the position for the pawl to fall in it. Thus the machine will continue to make the signals a certain length of time after the train has passed.

When the machine starts, the arm t on the aXis of the disk U turns shaft a', by means of arm b', a quarter of arevolution, and thus turns the metal shades c of the lantern away from the red glasses d', so that the lamp shows danger-signals while the train passes, and just before the machine stops the arm e turns the shades back by the `arm f', and shuts oi the danger-signal.

Having thus described my invention, l claim as new and desire to secure by Letters Patent- 1. The combination of impelling-train I J K L, mutilated pinion M, segment N, lever O, and the escapement R S T, substantially as specified.

stop-dsk shaft, combined and arranged substantially as specified.

4. rlhe main line Z, signal-line m, switch j, lever e, and connecting devices g h i, combined and arranged, with the rail f and the signal, substantially as specified.

JACOB D. HUGHSON. Witnesses:

C. W. HAMILTON, W. A. HAMILTON. 

